does l carnitine make your pee yellow Carnitine: the claims and why it may not work The Role of L-Carnitine in

Another early study examined hemodynamic and angiographic variables before, during, and after administering intravenous propionyl-L-carnitine (15 mg/kg body weight) in men with myocardial dysfunction and angina pectoris (62)

Ascorbic acid and carnitine biosynthesis

It seems that the reason carnitine was unable to increase muscle carnitine concentration in these studies for 2 reasons: Poor bioavailability (only 20% for of a 2-6 g dose is absorbed) and Because the transport of carnitine into the muscle was limited

(PubMed) Rebouche CJ

Effect of L-carnitine supplementation in comparison with moderate aerobic training on serum inflammatory parameters in healthy obese women